package ch6_p1;
import java.util.*;

public class ArrayListMagnet {
	public static void main(String[] args){
				
		ArrayList<String> a = new ArrayList<String>();
		a.add(0,"zero");
		a.add(1, "one");
		a.add(2, "two");
		a.add(3, "three");
		printAL(a);
		
		a.remove(2);
		if (a.contains("three")){
			a.add("four");
		}
		printAL(a);
		
		if (a.indexOf("four") != 4){
			a.add(4, "4.2");
		}
		printAL(a);
		
		if (a.contains("two")){
			a.add("2.2");
		}
		printAL(a);
	}		
		
		public static void printAL(ArrayList<String> al){
			for (String element : al){
				System.out.print(element + " ");
			}
			System.out.println(" ");
		}

}
